@article {demange2005p,
	title = {(p, k)-coloring problems in line graphs},
	journal = {Theoretical computer science},
	volume = {349},
	number = {3},
	year = {2005},
	pages = {462{\textendash}474},
	publisher = {Elsevier},
	author = {Demange, Marc and Ekim, Tinaz and de Werra, Dominique}
}
@article {demange2005partitioning,
	title = {Partitioning cographs into cliques and stable sets},
	journal = {Discrete Optimization},
	volume = {2},
	number = {2},
	year = {2005},
	pages = {145{\textendash}153},
	publisher = {Elsevier},
	author = {Demange, Marc and Ekim, Tinaz and de Werra, Dominique}
}
